Find delta y/delta x
(10-7)/(15-12)=3/3=1, (15-10)/(20-15)=5/5=1
y=x+b, using any point, I'll use (20,15) we can solve for b...
15=20+b
b=-5 so our line is:
y=x-5, and we want to know when y=17
17=x-5
x=22
so n=22
Answer:
What is the question??
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Required
Determine the formula
First, we need to solve common difference (d)
Take n as 2
Represent each function as a sum of the previous
Represent the function as
Reorder
The quadratic equation you provided has
so the discriminant b²-4ac is ...
... b² - 4ac = (-3)² -4(-2)(8) = 9 + 64 = 73
The discriminant is positive, so there are two real solutions to the given equation.